Prep Ingredients: Drain the tuna and place in a medium bowl. Dice avocado and cucumber, and finely chop the green onion.
Mix Salad: Add all vegetables to the tuna. Drizzle with balsamic vinegar.
Season: Sprinkle with Everything But the Bagel seasoning to taste.
Toss & Serve: Gently mix until combined. Serve immediately or chill for a few minutes to let flavors meld.
